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    Question

    231      451           671         242 

              485              264 The following series are based on a specific pattern. In these series, one number is wrong. Find the wrong one.
    A 231 Correct Answer Incorrect Answer
    B 242 Correct Answer Incorrect Answer
    C 671 Correct Answer Incorrect Answer
    D 485 Correct Answer Incorrect Answer
    E 451 Correct Answer Incorrect Answer

    Solution

    Middle digit is the sum of first and last digit in all the number except 485. 

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